What interesting phenomenon is dynamically being illustrated in the applet below? [br](Feel free to move any of the [b][color=#1e84cc]blue points[/color][/b] and [color=#9900ff][b]soon-to-appear purple point[/b][/color] anywhere you'd like.)
In a regular pentagon, the areas of the [color=#bf9000][b]yellow triangle[/b][/color] and [color=#38761d][b]light green triangle[/b][/color] are both equal. [br](Source: This [url=https://twitter.com/solvemymaths/status/830868402965270528]tweet [/url]from [url=https://twitter.com/solvemymaths]Solve My Maths[/url]). [br][br]This applet informally shows these two triangles have the [b]same base[/b] and [color=#9900ff][b]same height[/b][/color]. Thus, they have the same area.